Lasersteuerung für Intensitäts-Otdr mit Phasenmoduliertem Licht

Details

Veröffentlichungs-Nr.

EP4726349

Anmeldetag

10. Oktober 2024

Veröffentlichung

15. April 2026

Rechtsraum

EP

IPC

G01M11/00(CHEN HONGXIN et al.)

Abstract

An apparatus for monitoring the intensity of optical backscattering along an optical fiber line comprises an optical sensor for interrogating the optical fiber line with coherent light. The optical sensor comprises a laser and a laser controller. The optical sensor splits light from the laser into probe light and reference light, couples modulated probe light into the optical fiber line and makes measurements on a superposition of the reference light and light returned from the optical fiber line by optical backscattering. The optical sensor estimates a backscattering intensity profile along said optical fiber line based on said measurements. The laser controller adjusts a wavelength of the laser based at least in part on mismatch between at least a portion of the backscattering intensity profile and a reference profile.

Anmelder

Firma

Nokia Solutions and Networks Oy

Land

🇫🇮 Finnland